/**
 * Name:qrcode.js
 * Author:gene.jiang
 * E-mail:1013195469@qq.com
 * Website:http://www.jianggujin.com/
 * LICENSE:Apache v2 License
 * Description:QRCode, https://github.com/davidshimjs/qrcodejs
 */
layui.define([], function(exports) {
    /**
     * @fileoverview
     * - Using the 'QRCode for Javascript library'
     * - Fixed dataset of 'QRCode for Javascript library' for support full-spec.
     * - this library has no dependencies.
     * 
     * @author davidshimjs
     * @see <a href="http://www.d-project.com/" target="_blank">http://www.d-project.com/</a>
     * @see <a href="http://jeromeetienne.github.com/jquery-qrcode/" target="_blank">http://jeromeetienne.github.com/jquery-qrcode/</a>
     */
    var QRCode;

    (function() {
        //---------------------------------------------------------------------
        // QRCode for JavaScript
        //
        // Copyright (c) 2009 Kazuhiko Arase
        //
        // URL: http://www.d-project.com/
        //
        // Licensed under the MIT license:
        //   http://www.opensource.org/licenses/mit-license.php
        //
        // The word "QR Code" is registered trademark of 
        // DENSO WAVE INCORPORATED
        //   http://www.denso-wave.com/qrcode/faqpatent-e.html
        //
        //---------------------------------------------------------------------
        function QR8bitByte(data) {
            this.mode = QRMode.MODE_8BIT_BYTE;
            this.data = data;
            this.parsedData = [];

            // Added to support UTF-8 Characters
            for(var i = 0, l = this.data.length; i < l; i++) {
                var byteArray = [];
                var code = this.data.charCodeAt(i);

                if(code > 0x10000) {
                    byteArray[0] = 0xF0 | ((code & 0x1C0000) >>> 18);
                    byteArray[1] = 0x80 | ((code & 0x3F000) >>> 12);
                    byteArray[2] = 0x80 | ((code & 0xFC0) >>> 6);
                    byteArray[3] = 0x80 | (code & 0x3F);
                } else if(code > 0x800) {
                    byteArray[0] = 0xE0 | ((code & 0xF000) >>> 12);
                    byteArray[1] = 0x80 | ((code & 0xFC0) >>> 6);
                    byteArray[2] = 0x80 | (code & 0x3F);
                } else if(code > 0x80) {
                    byteArray[0] = 0xC0 | ((code & 0x7C0) >>> 6);
                    byteArray[1] = 0x80 | (code & 0x3F);
                } else {
                    byteArray[0] = code;
                }

                this.parsedData.push(byteArray);
            }

            this.parsedData = Array.prototype.concat.apply([], this.parsedData);

            if(this.parsedData.length != this.data.length) {
                this.parsedData.unshift(191);
                this.parsedData.unshift(187);
                this.parsedData.unshift(239);
            }
        }

        QR8bitByte.prototype = {
            getLength: function(buffer) {
                return this.parsedData.length;
            },
            write: function(buffer) {
                for(var i = 0, l = this.parsedData.length; i < l; i++) {
                    buffer.put(this.parsedData[i], 8);
                }
            }
        };

        function QRCodeModel(typeNumber, errorCorrectLevel) {
            this.typeNumber = typeNumber;
            this.errorCorrectLevel = errorCorrectLevel;
            this.modules = null;
            this.moduleCount = 0;
            this.dataCache = null;
            this.dataList = [];
        }

        QRCodeModel.prototype = {
            addData: function(data) {
                var newData = new QR8bitByte(data);
                this.dataList.push(newData);
                this.dataCache = null;
            },
            isDark: function(row, col) {
                if(row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
                    throw new Error(row + "," + col);
                }
                return this.modules[row][col];
            },
            getModuleCount: function() {
                return this.moduleCount;
            },
            make: function() {
                this.makeImpl(false, this.getBestMaskPattern());
            },
            makeImpl: function(test, maskPattern) {
                this.moduleCount = this.typeNumber * 4 + 17;
                this.modules = new Array(this.moduleCount);
                for(var row = 0; row < this.moduleCount; row++) {
                    this.modules[row] = new Array(this.moduleCount);
                    for(var col = 0; col < this.moduleCount; col++) {
                        this.modules[row][col] = null;
                    }
                }
                this.setupPositionProbePattern(0, 0);
                this.setupPositionProbePattern(this.moduleCount - 7, 0);
                this.setupPositionProbePattern(0, this.moduleCount - 7);
                this.setupPositionAdjustPattern();
                this.setupTimingPattern();
                this.setupTypeInfo(test, maskPattern);
                if(this.typeNumber >= 7) {
                    this.setupTypeNumber(test);
                }
                if(this.dataCache == null) {
                    this.dataCache = QRCodeModel.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
                }
                this.mapData(this.dataCache, maskPattern);
            },
            setupPositionProbePattern: function(row, col) {
                for(var r = -1; r <= 7; r++) {
                    if(row + r <= -1 || this.moduleCount <= row + r) continue;
                    for(var c = -1; c <= 7; c++) {
                        if(col + c <= -1 || this.moduleCount <= col + c) continue;
                        if((0 <= r && r <= 6 && (c == 0 || c == 6)) || (0 <= c && c <= 6 && (r == 0 || r == 6)) || (2 <= r && r <= 4 && 2 <= c && c <= 4)) {
                            this.modules[row + r][col + c] = true;
                        } else {
                            this.modules[row + r][col + c] = false;
                        }
                    }
                }
            },
            getBestMaskPattern: function() {
                var minLostPoint = 0;
                var pattern = 0;
                for(var i = 0; i < 8; i++) {
                    this.makeImpl(true, i);
                    var lostPoint = QRUtil.getLostPoint(this);
                    if(i == 0 || minLostPoint > lostPoint) {
                        minLostPoint = lostPoint;
                        pattern = i;
                    }
                }
                return pattern;
            },
            createMovieClip: function(target_mc, instance_name, depth) {
                var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
                var cs = 1;
                this.make();
                for(var row = 0; row < this.modules.length; row++) {
                    var y = row * cs;
                    for(var col = 0; col < this.modules[row].length; col++) {
                        var x = col * cs;
                        var dark = this.modules[row][col];
                        if(dark) {
                            qr_mc.beginFill(0, 100);
                            qr_mc.moveTo(x, y);
                            qr_mc.lineTo(x + cs, y);
                            qr_mc.lineTo(x + cs, y + cs);
                            qr_mc.lineTo(x, y + cs);
                            qr_mc.endFill();
                        }
                    }
                }
                return qr_mc;
            },
            setupTimingPattern: function() {
                for(var r = 8; r < this.moduleCount - 8; r++) {
                    if(this.modules[r][6] != null) {
                        continue;
                    }
                    this.modules[r][6] = (r % 2 == 0);
                }
                for(var c = 8; c < this.moduleCount - 8; c++) {
                    if(this.modules[6][c] != null) {
                        continue;
                    }
                    this.modules[6][c] = (c % 2 == 0);
                }
            },
            setupPositionAdjustPattern: function() {
                var pos = QRUtil.getPatternPosition(this.typeNumber);
                for(var i = 0; i < pos.length; i++) {
                    for(var j = 0; j < pos.length; j++) {
                        var row = pos[i];
                        var col = pos[j];
                        if(this.modules[row][col] != null) {
                            continue;
                        }
                        for(var r = -2; r <= 2; r++) {
                            for(var c = -2; c <= 2; c++) {
                                if(r == -2 || r == 2 || c == -2 || c == 2 || (r == 0 && c == 0)) {
                                    this.modules[row + r][col + c] = true;
                                } else {
                                    this.modules[row + r][col + c] = false;
                                }
                            }
                        }
                    }
                }
            },
            setupTypeNumber: function(test) {
                var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
                for(var i = 0; i < 18; i++) {
                    var mod = (!test && ((bits >> i) & 1) == 1);
                    this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
                }
                for(var i = 0; i < 18; i++) {
                    var mod = (!test && ((bits >> i) & 1) == 1);
                    this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
                }
            },
            setupTypeInfo: function(test, maskPattern) {
                var data = (this.errorCorrectLevel << 3) | maskPattern;
                var bits = QRUtil.getBCHTypeInfo(data);
                for(var i = 0; i < 15; i++) {
                    var mod = (!test && ((bits >> i) & 1) == 1);
                    if(i < 6) {
                        this.modules[i][8] = mod;
                    } else if(i < 8) {
                        this.modules[i + 1][8] = mod;
                    } else {
                        this.modules[this.moduleCount - 15 + i][8] = mod;
                    }
                }
                for(var i = 0; i < 15; i++) {
                    var mod = (!test && ((bits >> i) & 1) == 1);
                    if(i < 8) {
                        this.modules[8][this.moduleCount - i - 1] = mod;
                    } else if(i < 9) {
                        this.modules[8][15 - i - 1 + 1] = mod;
                    } else {
                        this.modules[8][15 - i - 1] = mod;
                    }
                }
                this.modules[this.moduleCount - 8][8] = (!test);
            },
            mapData: function(data, maskPattern) {
                var inc = -1;
                var row = this.moduleCount - 1;
                var bitIndex = 7;
                var byteIndex = 0;
                for(var col = this.moduleCount - 1; col > 0; col -= 2) {
                    if(col == 6) col--;
                    while(true) {
                        for(var c = 0; c < 2; c++) {
                            if(this.modules[row][col - c] == null) {
                                var dark = false;
                                if(byteIndex < data.length) {
                                    dark = (((data[byteIndex] >>> bitIndex) & 1) == 1);
                                }
                                var mask = QRUtil.getMask(maskPattern, row, col - c);
                                if(mask) {
                                    dark = !dark;
                                }
                                this.modules[row][col - c] = dark;
                                bitIndex--;
                                if(bitIndex == -1) {
                                    byteIndex++;
                                    bitIndex = 7;
                                }
                            }
                        }
                        row += inc;
                        if(row < 0 || this.moduleCount <= row) {
                            row -= inc;
                            inc = -inc;
                            break;
                        }
                    }
                }
            }
        };
        QRCodeModel.PAD0 = 0xEC;
        QRCodeModel.PAD1 = 0x11;
        QRCodeModel.createData = function(typeNumber, errorCorrectLevel, dataList) {
            var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
            var buffer = new QRBitBuffer();
            for(var i = 0; i < dataList.length; i++) {
                var data = dataList[i];
                buffer.put(data.mode, 4);
                buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber));
                data.write(buffer);
            }
            var totalDataCount = 0;
            for(var i = 0; i < rsBlocks.length; i++) {
                totalDataCount += rsBlocks[i].dataCount;
            }
            if(buffer.getLengthInBits() > totalDataCount * 8) {
                throw new Error("code length overflow. (" +
                    buffer.getLengthInBits() +
                    ">" +
                    totalDataCount * 8 +
                    ")");
            }
            if(buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
                buffer.put(0, 4);
            }
            while(buffer.getLengthInBits() % 8 != 0) {
                buffer.putBit(false);
            }
            while(true) {
                if(buffer.getLengthInBits() >= totalDataCount * 8) {
                    break;
                }
                buffer.put(QRCodeModel.PAD0, 8);
                if(buffer.getLengthInBits() >= totalDataCount * 8) {
                    break;
                }
                buffer.put(QRCodeModel.PAD1, 8);
            }
            return QRCodeModel.createBytes(buffer, rsBlocks);
        };
        QRCodeModel.createBytes = function(buffer, rsBlocks) {
            var offset = 0;
            var maxDcCount = 0;
            var maxEcCount = 0;
            var dcdata = new Array(rsBlocks.length);
            var ecdata = new Array(rsBlocks.length);
            for(var r = 0; r < rsBlocks.length; r++) {
                var dcCount = rsBlocks[r].dataCount;
                var ecCount = rsBlocks[r].totalCount - dcCount;
                maxDcCount = Math.max(maxDcCount, dcCount);
                maxEcCount = Math.max(maxEcCount, ecCount);
                dcdata[r] = new Array(dcCount);
                for(var i = 0; i < dcdata[r].length; i++) {
                    dcdata[r][i] = 0xff & buffer.buffer[i + offset];
                }
                offset += dcCount;
                var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
                var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
                var modPoly = rawPoly.mod(rsPoly);
                ecdata[r] = new Array(rsPoly.getLength() - 1);
                for(var i = 0; i < ecdata[r].length; i++) {
                    var modIndex = i + modPoly.getLength() - ecdata[r].length;
                    ecdata[r][i] = (modIndex >= 0) ? modPoly.get(modIndex) : 0;
                }
            }
            var totalCodeCount = 0;
            for(var i = 0; i < rsBlocks.length; i++) {
                totalCodeCount += rsBlocks[i].totalCount;
            }
            var data = new Array(totalCodeCount);
            var index = 0;
            for(var i = 0; i < maxDcCount; i++) {
                for(var r = 0; r < rsBlocks.length; r++) {
                    if(i < dcdata[r].length) {
                        data[index++] = dcdata[r][i];
                    }
                }
            }
            for(var i = 0; i < maxEcCount; i++) {
                for(var r = 0; r < rsBlocks.length; r++) {
                    if(i < ecdata[r].length) {
                        data[index++] = ecdata[r][i];
                    }
                }
            }
            return data;
        };
        var QRMode = {
            MODE_NUMBER: 1 << 0,
            MODE_ALPHA_NUM: 1 << 1,
            MODE_8BIT_BYTE: 1 << 2,
            MODE_KANJI: 1 << 3
        };
        var QRErrorCorrectLevel = {
            L: 1,
            M: 0,
            Q: 3,
            H: 2
        };
        var QRMaskPattern = {
            PATTERN000: 0,
            PATTERN001: 1,
            PATTERN010: 2,
            PATTERN011: 3,
            PATTERN100: 4,
            PATTERN101: 5,
            PATTERN110: 6,
            PATTERN111: 7
        };
        var QRUtil = {
            PATTERN_POSITION_TABLE: [
                [],
                [6, 18],
                [6, 22],
                [6, 26],
                [6, 30],
                [6, 34],
                [6, 22, 38],
                [6, 24, 42],
                [6, 26, 46],
                [6, 28, 50],
                [6, 30, 54],
                [6, 32, 58],
                [6, 34, 62],
                [6, 26, 46, 66],
                [6, 26, 48, 70],
                [6, 26, 50, 74],
                [6, 30, 54, 78],
                [6, 30, 56, 82],
                [6, 30, 58, 86],
                [6, 34, 62, 90],
                [6, 28, 50, 72, 94],
                [6, 26, 50, 74, 98],
                [6, 30, 54, 78, 102],
                [6, 28, 54, 80, 106],
                [6, 32, 58, 84, 110],
                [6, 30, 58, 86, 114],
                [6, 34, 62, 90, 118],
                [6, 26, 50, 74, 98, 122],
                [6, 30, 54, 78, 102, 126],
                [6, 26, 52, 78, 104, 130],
                [6, 30, 56, 82, 108, 134],
                [6, 34, 60, 86, 112, 138],
                [6, 30, 58, 86, 114, 142],
                [6, 34, 62, 90, 118, 146],
                [6, 30, 54, 78, 102, 126, 150],
                [6, 24, 50, 76, 102, 128, 154],
                [6, 28, 54, 80, 106, 132, 158],
                [6, 32, 58, 84, 110, 136, 162],
                [6, 26, 54, 82, 110, 138, 166],
                [6, 30, 58, 86, 114, 142, 170]
            ],
            G15: (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
            G18: (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
            G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),
            getBCHTypeInfo: function(data) {
                var d = data << 10;
                while(QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
                    d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15)));
                }
                return((data << 10) | d) ^ QRUtil.G15_MASK;
            },
            getBCHTypeNumber: function(data) {
                var d = data << 12;
                while(QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
                    d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18)));
                }
                return(data << 12) | d;
            },
            getBCHDigit: function(data) {
                var digit = 0;
                while(data != 0) {
                    digit++;
                    data >>>= 1;
                }
                return digit;
            },
            getPatternPosition: function(typeNumber) {
                return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
            },
            getMask: function(maskPattern, i, j) {
                switch(maskPattern) {
                    case QRMaskPattern.PATTERN000:
                        return(i + j) % 2 == 0;
                    case QRMaskPattern.PATTERN001:
                        return i % 2 == 0;
                    case QRMaskPattern.PATTERN010:
                        return j % 3 == 0;
                    case QRMaskPattern.PATTERN011:
                        return(i + j) % 3 == 0;
                    case QRMaskPattern.PATTERN100:
                        return(Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
                    case QRMaskPattern.PATTERN101:
                        return(i * j) % 2 + (i * j) % 3 == 0;
                    case QRMaskPattern.PATTERN110:
                        return((i * j) % 2 + (i * j) % 3) % 2 == 0;
                    case QRMaskPattern.PATTERN111:
                        return((i * j) % 3 + (i + j) % 2) % 2 == 0;
                    default:
                        throw new Error("bad maskPattern:" + maskPattern);
                }
            },
            getErrorCorrectPolynomial: function(errorCorrectLength) {
                var a = new QRPolynomial([1], 0);
                for(var i = 0; i < errorCorrectLength; i++) {
                    a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0));
                }
                return a;
            },
            getLengthInBits: function(mode, type) {
                if(1 <= type && type < 10) {
                    switch(mode) {
                        case QRMode.MODE_NUMBER:
                            return 10;
                        case QRMode.MODE_ALPHA_NUM:
                            return 9;
                        case QRMode.MODE_8BIT_BYTE:
                            return 8;
                        case QRMode.MODE_KANJI:
                            return 8;
                        default:
                            throw new Error("mode:" + mode);
                    }
                } else if(type < 27) {
                    switch(mode) {
                        case QRMode.MODE_NUMBER:
                            return 12;
                        case QRMode.MODE_ALPHA_NUM:
                            return 11;
                        case QRMode.MODE_8BIT_BYTE:
                            return 16;
                        case QRMode.MODE_KANJI:
                            return 10;
                        default:
                            throw new Error("mode:" + mode);
                    }
                } else if(type < 41) {
                    switch(mode) {
                        case QRMode.MODE_NUMBER:
                            return 14;
                        case QRMode.MODE_ALPHA_NUM:
                            return 13;
                        case QRMode.MODE_8BIT_BYTE:
                            return 16;
                        case QRMode.MODE_KANJI:
                            return 12;
                        default:
                            throw new Error("mode:" + mode);
                    }
                } else {
                    throw new Error("type:" + type);
                }
            },
            getLostPoint: function(qrCode) {
                var moduleCount = qrCode.getModuleCount();
                var lostPoint = 0;
                for(var row = 0; row < moduleCount; row++) {
                    for(var col = 0; col < moduleCount; col++) {
                        var sameCount = 0;
                        var dark = qrCode.isDark(row, col);
                        for(var r = -1; r <= 1; r++) {
                            if(row + r < 0 || moduleCount <= row + r) {
                                continue;
                            }
                            for(var c = -1; c <= 1; c++) {
                                if(col + c < 0 || moduleCount <= col + c) {
                                    continue;
                                }
                                if(r == 0 && c == 0) {
                                    continue;
                                }
                                if(dark == qrCode.isDark(row + r, col + c)) {
                                    sameCount++;
                                }
                            }
                        }
                        if(sameCount > 5) {
                            lostPoint += (3 + sameCount - 5);
                        }
                    }
                }
                for(var row = 0; row < moduleCount - 1; row++) {
                    for(var col = 0; col < moduleCount - 1; col++) {
                        var count = 0;
                        if(qrCode.isDark(row, col)) count++;
                        if(qrCode.isDark(row + 1, col)) count++;
                        if(qrCode.isDark(row, col + 1)) count++;
                        if(qrCode.isDark(row + 1, col + 1)) count++;
                        if(count == 0 || count == 4) {
                            lostPoint += 3;
                        }
                    }
                }
                for(var row = 0; row < moduleCount; row++) {
                    for(var col = 0; col < moduleCount - 6; col++) {
                        if(qrCode.isDark(row, col) && !qrCode.isDark(row, col + 1) && qrCode.isDark(row, col + 2) && qrCode.isDark(row, col + 3) && qrCode.isDark(row, col + 4) && !qrCode.isDark(row, col + 5) && qrCode.isDark(row, col + 6)) {
                            lostPoint += 40;
                        }
                    }
                }
                for(var col = 0; col < moduleCount; col++) {
                    for(var row = 0; row < moduleCount - 6; row++) {
                        if(qrCode.isDark(row, col) && !qrCode.isDark(row + 1, col) && qrCode.isDark(row + 2, col) && qrCode.isDark(row + 3, col) && qrCode.isDark(row + 4, col) && !qrCode.isDark(row + 5, col) && qrCode.isDark(row + 6, col)) {
                            lostPoint += 40;
                        }
                    }
                }
                var darkCount = 0;
                for(var col = 0; col < moduleCount; col++) {
                    for(var row = 0; row < moduleCount; row++) {
                        if(qrCode.isDark(row, col)) {
                            darkCount++;
                        }
                    }
                }
                var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
                lostPoint += ratio * 10;
                return lostPoint;
            }
        };
        var QRMath = {
            glog: function(n) {
                if(n < 1) {
                    throw new Error("glog(" + n + ")");
                }
                return QRMath.LOG_TABLE[n];
            },
            gexp: function(n) {
                while(n < 0) {
                    n += 255;
                }
                while(n >= 256) {
                    n -= 255;
                }
                return QRMath.EXP_TABLE[n];
            },
            EXP_TABLE: new Array(256),
            LOG_TABLE: new Array(256)
        };
        for(var i = 0; i < 8; i++) {
            QRMath.EXP_TABLE[i] = 1 << i;
        }
        for(var i = 8; i < 256; i++) {
            QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^ QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8];
        }
        for(var i = 0; i < 255; i++) {
            QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i;
        }

        function QRPolynomial(num, shift) {
            if(num.length == undefined) {
                throw new Error(num.length + "/" + shift);
            }
            var offset = 0;
            while(offset < num.length && num[offset] == 0) {
                offset++;
            }
            this.num = new Array(num.length - offset + shift);
            for(var i = 0; i < num.length - offset; i++) {
                this.num[i] = num[i + offset];
            }
        }
        QRPolynomial.prototype = {
            get: function(index) {
                return this.num[index];
            },
            getLength: function() {
                return this.num.length;
            },
            multiply: function(e) {
                var num = new Array(this.getLength() + e.getLength() - 1);
                for(var i = 0; i < this.getLength(); i++) {
                    for(var j = 0; j < e.getLength(); j++) {
                        num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i)) + QRMath.glog(e.get(j)));
                    }
                }
                return new QRPolynomial(num, 0);
            },
            mod: function(e) {
                if(this.getLength() - e.getLength() < 0) {
                    return this;
                }
                var ratio = QRMath.glog(this.get(0)) - QRMath.glog(e.get(0));
                var num = new Array(this.getLength());
                for(var i = 0; i < this.getLength(); i++) {
                    num[i] = this.get(i);
                }
                for(var i = 0; i < e.getLength(); i++) {
                    num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio);
                }
                return new QRPolynomial(num, 0).mod(e);
            }
        };

        function QRRSBlock(totalCount, dataCount) {
            this.totalCount = totalCount;
            this.dataCount = dataCount;
        }
        QRRSBlock.RS_BLOCK_TABLE = [
            [1, 26, 19],
            [1, 26, 16],
            [1, 26, 13],
            [1, 26, 9],
            [1, 44, 34],
            [1, 44, 28],
            [1, 44, 22],
            [1, 44, 16],
            [1, 70, 55],
            [1, 70, 44],
            [2, 35, 17],
            [2, 35, 13],
            [1, 100, 80],
            [2, 50, 32],
            [2, 50, 24],
            [4, 25, 9],
            [1, 134, 108],
            [2, 67, 43],
            [2, 33, 15, 2, 34, 16],
            [2, 33, 11, 2, 34, 12],
            [2, 86, 68],
            [4, 43, 27],
            [4, 43, 19],
            [4, 43, 15],
            [2, 98, 78],
            [4, 49, 31],
            [2, 32, 14, 4, 33, 15],
            [4, 39, 13, 1, 40, 14],
            [2, 121, 97],
            [2, 60, 38, 2, 61, 39],
            [4, 40, 18, 2, 41, 19],
            [4, 40, 14, 2, 41, 15],
            [2, 146, 116],
            [3, 58, 36, 2, 59, 37],
            [4, 36, 16, 4, 37, 17],
            [4, 36, 12, 4, 37, 13],
            [2, 86, 68, 2, 87, 69],
            [4, 69, 43, 1, 70, 44],
            [6, 43, 19, 2, 44, 20],
            [6, 43, 15, 2, 44, 16],
            [4, 101, 81],
            [1, 80, 50, 4, 81, 51],
            [4, 50, 22, 4, 51, 23],
            [3, 36, 12, 8, 37, 13],
            [2, 116, 92, 2, 117, 93],
            [6, 58, 36, 2, 59, 37],
            [4, 46, 20, 6, 47, 21],
            [7, 42, 14, 4, 43, 15],
            [4, 133, 107],
            [8, 59, 37, 1, 60, 38],
            [8, 44, 20, 4, 45, 21],
            [12, 33, 11, 4, 34, 12],
            [3, 145, 115, 1, 146, 116],
            [4, 64, 40, 5, 65, 41],
            [11, 36, 16, 5, 37, 17],
            [11, 36, 12, 5, 37, 13],
            [5, 109, 87, 1, 110, 88],
            [5, 65, 41, 5, 66, 42],
            [5, 54, 24, 7, 55, 25],
            [11, 36, 12],
            [5, 122, 98, 1, 123, 99],
            [7, 73, 45, 3, 74, 46],
            [15, 43, 19, 2, 44, 20],
            [3, 45, 15, 13, 46, 16],
            [1, 135, 107, 5, 136, 108],
            [10, 74, 46, 1, 75, 47],
            [1, 50, 22, 15, 51, 23],
            [2, 42, 14, 17, 43, 15],
            [5, 150, 120, 1, 151, 121],
            [9, 69, 43, 4, 70, 44],
            [17, 50, 22, 1, 51, 23],
            [2, 42, 14, 19, 43, 15],
            [3, 141, 113, 4, 142, 114],
            [3, 70, 44, 11, 71, 45],
            [17, 47, 21, 4, 48, 22],
            [9, 39, 13, 16, 40, 14],
            [3, 135, 107, 5, 136, 108],
            [3, 67, 41, 13, 68, 42],
            [15, 54, 24, 5, 55, 25],
            [15, 43, 15, 10, 44, 16],
            [4, 144, 116, 4, 145, 117],
            [17, 68, 42],
            [17, 50, 22, 6, 51, 23],
            [19, 46, 16, 6, 47, 17],
            [2, 139, 111, 7, 140, 112],
            [17, 74, 46],
            [7, 54, 24, 16, 55, 25],
            [34, 37, 13],
            [4, 151, 121, 5, 152, 122],
            [4, 75, 47, 14, 76, 48],
            [11, 54, 24, 14, 55, 25],
            [16, 45, 15, 14, 46, 16],
            [6, 147, 117, 4, 148, 118],
            [6, 73, 45, 14, 74, 46],
            [11, 54, 24, 16, 55, 25],
            [30, 46, 16, 2, 47, 17],
            [8, 132, 106, 4, 133, 107],
            [8, 75, 47, 13, 76, 48],
            [7, 54, 24, 22, 55, 25],
            [22, 45, 15, 13, 46, 16],
            [10, 142, 114, 2, 143, 115],
            [19, 74, 46, 4, 75, 47],
            [28, 50, 22, 6, 51, 23],
            [33, 46, 16, 4, 47, 17],
            [8, 152, 122, 4, 153, 123],
            [22, 73, 45, 3, 74, 46],
            [8, 53, 23, 26, 54, 24],
            [12, 45, 15, 28, 46, 16],
            [3, 147, 117, 10, 148, 118],
            [3, 73, 45, 23, 74, 46],
            [4, 54, 24, 31, 55, 25],
            [11, 45, 15, 31, 46, 16],
            [7, 146, 116, 7, 147, 117],
            [21, 73, 45, 7, 74, 46],
            [1, 53, 23, 37, 54, 24],
            [19, 45, 15, 26, 46, 16],
            [5, 145, 115, 10, 146, 116],
            [19, 75, 47, 10, 76, 48],
            [15, 54, 24, 25, 55, 25],
            [23, 45, 15, 25, 46, 16],
            [13, 145, 115, 3, 146, 116],
            [2, 74, 46, 29, 75, 47],
            [42, 54, 24, 1, 55, 25],
            [23, 45, 15, 28, 46, 16],
            [17, 145, 115],
            [10, 74, 46, 23, 75, 47],
            [10, 54, 24, 35, 55, 25],
            [19, 45, 15, 35, 46, 16],
            [17, 145, 115, 1, 146, 116],
            [14, 74, 46, 21, 75, 47],
            [29, 54, 24, 19, 55, 25],
            [11, 45, 15, 46, 46, 16],
            [13, 145, 115, 6, 146, 116],
            [14, 74, 46, 23, 75, 47],
            [44, 54, 24, 7, 55, 25],
            [59, 46, 16, 1, 47, 17],
            [12, 151, 121, 7, 152, 122],
            [12, 75, 47, 26, 76, 48],
            [39, 54, 24, 14, 55, 25],
            [22, 45, 15, 41, 46, 16],
            [6, 151, 121, 14, 152, 122],
            [6, 75, 47, 34, 76, 48],
            [46, 54, 24, 10, 55, 25],
            [2, 45, 15, 64, 46, 16],
            [17, 152, 122, 4, 153, 123],
            [29, 74, 46, 14, 75, 47],
            [49, 54, 24, 10, 55, 25],
            [24, 45, 15, 46, 46, 16],
            [4, 152, 122, 18, 153, 123],
            [13, 74, 46, 32, 75, 47],
            [48, 54, 24, 14, 55, 25],
            [42, 45, 15, 32, 46, 16],
            [20, 147, 117, 4, 148, 118],
            [40, 75, 47, 7, 76, 48],
            [43, 54, 24, 22, 55, 25],
            [10, 45, 15, 67, 46, 16],
            [19, 148, 118, 6, 149, 119],
            [18, 75, 47, 31, 76, 48],
            [34, 54, 24, 34, 55, 25],
            [20, 45, 15, 61, 46, 16]
        ];
        QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) {
            var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
            if(rsBlock == undefined) {
                throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
            }
            var length = rsBlock.length / 3;
            var list = [];
            for(var i = 0; i < length; i++) {
                var count = rsBlock[i * 3 + 0];
                var totalCount = rsBlock[i * 3 + 1];
                var dataCount = rsBlock[i * 3 + 2];
                for(var j = 0; j < count; j++) {
                    list.push(new QRRSBlock(totalCount, dataCount));
                }
            }
            return list;
        };
        QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) {
            switch(errorCorrectLevel) {
                case QRErrorCorrectLevel.L:
                    return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
                case QRErrorCorrectLevel.M:
                    return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
                case QRErrorCorrectLevel.Q:
                    return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
                case QRErrorCorrectLevel.H:
                    return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
                default:
                    return undefined;
            }
        };

        function QRBitBuffer() {
            this.buffer = [];
            this.length = 0;
        }
        QRBitBuffer.prototype = {
            get: function(index) {
                var bufIndex = Math.floor(index / 8);
                return((this.buffer[bufIndex] >>> (7 - index % 8)) & 1) == 1;
            },
            put: function(num, length) {
                for(var i = 0; i < length; i++) {
                    this.putBit(((num >>> (length - i - 1)) & 1) == 1);
                }
            },
            getLengthInBits: function() {
                return this.length;
            },
            putBit: function(bit) {
                var bufIndex = Math.floor(this.length / 8);
                if(this.buffer.length <= bufIndex) {
                    this.buffer.push(0);
                }
                if(bit) {
                    this.buffer[bufIndex] |= (0x80 >>> (this.length % 8));
                }
                this.length++;
            }
        };
        var QRCodeLimitLength = [
            [17, 14, 11, 7],
            [32, 26, 20, 14],
            [53, 42, 32, 24],
            [78, 62, 46, 34],
            [106, 84, 60, 44],
            [134, 106, 74, 58],
            [154, 122, 86, 64],
            [192, 152, 108, 84],
            [230, 180, 130, 98],
            [271, 213, 151, 119],
            [321, 251, 177, 137],
            [367, 287, 203, 155],
            [425, 331, 241, 177],
            [458, 362, 258, 194],
            [520, 412, 292, 220],
            [586, 450, 322, 250],
            [644, 504, 364, 280],
            [718, 560, 394, 310],
            [792, 624, 442, 338],
            [858, 666, 482, 382],
            [929, 711, 509, 403],
            [1003, 779, 565, 439],
            [1091, 857, 611, 461],
            [1171, 911, 661, 511],
            [1273, 997, 715, 535],
            [1367, 1059, 751, 593],
            [1465, 1125, 805, 625],
            [1528, 1190, 868, 658],
            [1628, 1264, 908, 698],
            [1732, 1370, 982, 742],
            [1840, 1452, 1030, 790],
            [1952, 1538, 1112, 842],
            [2068, 1628, 1168, 898],
            [2188, 1722, 1228, 958],
            [2303, 1809, 1283, 983],
            [2431, 1911, 1351, 1051],
            [2563, 1989, 1423, 1093],
            [2699, 2099, 1499, 1139],
            [2809, 2213, 1579, 1219],
            [2953, 2331, 1663, 1273]
        ];

        function _isSupportCanvas() {
            return typeof CanvasRenderingContext2D != "undefined";
        }

        // android 2.x doesn't support Data-URI spec
        function _getAndroid() {
            var android = false;
            var sAgent = navigator.userAgent;

            if(/android/i.test(sAgent)) { // android
                android = true;
                var aMat = sAgent.toString().match(/android ([0-9]\.[0-9])/i);

                if(aMat && aMat[1]) {
                    android = parseFloat(aMat[1]);
                }
            }

            return android;
        }

        var svgDrawer = (function() {

            var Drawing = function(el, htOption) {
                this._el = el;
                this._htOption = htOption;
            };

            Drawing.prototype.draw = function(oQRCode) {
                var _htOption = this._htOption;
                var _el = this._el;
                var nCount = oQRCode.getModuleCount();
                var nWidth = Math.floor(_htOption.width / nCount);
                var nHeight = Math.floor(_htOption.height / nCount);

                this.clear();

                function makeSVG(tag, attrs) {
                    var el = document.createElementNS('http://www.w3.org/2000/svg', tag);
                    for(var k in attrs)
                        if(attrs.hasOwnProperty(k)) el.setAttribute(k, attrs[k]);
                    return el;
                }

                var svg = makeSVG("svg", {
                    'viewBox': '0 0 ' + String(nCount) + " " + String(nCount),
                    'width': '100%',
                    'height': '100%',
                    'fill': _htOption.colorLight
                });
                svg.setAttributeNS("http://www.w3.org/2000/xmlns/", "xmlns:xlink", "http://www.w3.org/1999/xlink");
                _el.appendChild(svg);

                svg.appendChild(makeSVG("rect", {
                    "fill": _htOption.colorLight,
                    "width": "100%",
                    "height": "100%"
                }));
                svg.appendChild(makeSVG("rect", {
                    "fill": _htOption.colorDark,
                    "width": "1",
                    "height": "1",
                    "id": "template"
                }));

                for(var row = 0; row < nCount; row++) {
                    for(var col = 0; col < nCount; col++) {
                        if(oQRCode.isDark(row, col)) {
                            var child = makeSVG("use", {
                                "x": String(col),
                                "y": String(row)
                            });
                            child.setAttributeNS("http://www.w3.org/1999/xlink", "href", "#template")
                            svg.appendChild(child);
                        }
                    }
                }
            };
            Drawing.prototype.clear = function() {
                while(this._el.hasChildNodes())
                    this._el.removeChild(this._el.lastChild);
            };
            return Drawing;
        })();

        var useSVG = document.documentElement.tagName.toLowerCase() === "svg";

        // Drawing in DOM by using Table tag
        var Drawing = useSVG ? svgDrawer : !_isSupportCanvas() ? (function() {
            var Drawing = function(el, htOption) {
                this._el = el;
                this._htOption = htOption;
            };

            /**
             * Draw the QRCode
             * 
             * @param {QRCode} oQRCode
             */
            Drawing.prototype.draw = function(oQRCode) {
                var _htOption = this._htOption;
                var _el = this._el;
                var nCount = oQRCode.getModuleCount();
                var nWidth = Math.floor(_htOption.width / nCount);
                var nHeight = Math.floor(_htOption.height / nCount);
                var aHTML = ['<table style="border:0;border-collapse:collapse;">'];

                for(var row = 0; row < nCount; row++) {
                    aHTML.push('<tr>');

                    for(var col = 0; col < nCount; col++) {
                        aHTML.push('<td style="border:0;border-collapse:collapse;padding:0;margin:0;width:' + nWidth + 'px;height:' + nHeight + 'px;background-color:' + (oQRCode.isDark(row, col) ? _htOption.colorDark : _htOption.colorLight) + ';"></td>');
                    }

                    aHTML.push('</tr>');
                }

                aHTML.push('</table>');
                _el.innerHTML = aHTML.join('');

                // Fix the margin values as real size.
                var elTable = _el.childNodes[0];
                var nLeftMarginTable = (_htOption.width - elTable.offsetWidth) / 2;
                var nTopMarginTable = (_htOption.height - elTable.offsetHeight) / 2;

                if(nLeftMarginTable > 0 && nTopMarginTable > 0) {
                    elTable.style.margin = nTopMarginTable + "px " + nLeftMarginTable + "px";
                }
            };

            /**
             * Clear the QRCode
             */
            Drawing.prototype.clear = function() {
                this._el.innerHTML = '';
            };

            return Drawing;
        })() : (function() { // Drawing in Canvas
            function _onMakeImage() {
                this._elImage.src = this._elCanvas.toDataURL("image/png");
                this._elImage.style.display = "block";
                this._elCanvas.style.display = "none";
            }

            // Android 2.1 bug workaround
            // http://code.google.com/p/android/issues/detail?id=5141
            if(this._android && this._android <= 2.1) {
                var factor = 1 / window.devicePixelRatio;
                var drawImage = CanvasRenderingContext2D.prototype.drawImage;
                CanvasRenderingContext2D.prototype.drawImage = function(image, sx, sy, sw, sh, dx, dy, dw, dh) {
                    if(("nodeName" in image) && /img/i.test(image.nodeName)) {
                        for(var i = arguments.length - 1; i >= 1; i--) {
                            arguments[i] = arguments[i] * factor;
                        }
                    } else if(typeof dw == "undefined") {
                        arguments[1] *= factor;
                        arguments[2] *= factor;
                        arguments[3] *= factor;
                        arguments[4] *= factor;
                    }

                    drawImage.apply(this, arguments);
                };
            }

            /**
             * Check whether the user's browser supports Data URI or not
             * 
             * @private
             * @param {Function} fSuccess Occurs if it supports Data URI
             * @param {Function} fFail Occurs if it doesn't support Data URI
             */
            function _safeSetDataURI(fSuccess, fFail) {
                var self = this;
                self._fFail = fFail;
                self._fSuccess = fSuccess;

                // Check it just once
                if(self._bSupportDataURI === null) {
                    var el = document.createElement("img");
                    var fOnError = function() {
                        self._bSupportDataURI = false;

                        if(self._fFail) {
                            self._fFail.call(self);
                        }
                    };
                    var fOnSuccess = function() {
                        self._bSupportDataURI = true;

                        if(self._fSuccess) {
                            self._fSuccess.call(self);
                        }
                    };

                    el.onabort = fOnError;
                    el.onerror = fOnError;
                    el.onload = fOnSuccess;
                    el.src = ""; // the Image contains 1px data.
                    return;
                } else if(self._bSupportDataURI === true && self._fSuccess) {
                    self._fSuccess.call(self);
                } else if(self._bSupportDataURI === false && self._fFail) {
                    self._fFail.call(self);
                }
            };

            /**
             * Drawing QRCode by using canvas
             * 
             * @constructor
             * @param {HTMLElement} el
             * @param {Object} htOption QRCode Options 
             */
            var Drawing = function(el, htOption) {
                this._bIsPainted = false;
                this._android = _getAndroid();

                this._htOption = htOption;
                this._elCanvas = document.createElement("canvas");
                this._elCanvas.width = htOption.width;
                this._elCanvas.height = htOption.height;
                el.appendChild(this._elCanvas);
                this._el = el;
                this._oContext = this._elCanvas.getContext("2d");
                this._bIsPainted = false;
                this._elImage = document.createElement("img");
                this._elImage.alt = "Scan me!";
                this._elImage.style.display = "none";
                this._el.appendChild(this._elImage);
                this._bSupportDataURI = null;
            };

            /**
             * Draw the QRCode
             * 
             * @param {QRCode} oQRCode 
             */
            Drawing.prototype.draw = function(oQRCode) {
                var _elImage = this._elImage;
                var _oContext = this._oContext;
                var _htOption = this._htOption;

                var nCount = oQRCode.getModuleCount();
                var nWidth = _htOption.width / nCount;
                var nHeight = _htOption.height / nCount;
                var nRoundedWidth = Math.round(nWidth);
                var nRoundedHeight = Math.round(nHeight);

                _elImage.style.display = "none";
                this.clear();

                for(var row = 0; row < nCount; row++) {
                    for(var col = 0; col < nCount; col++) {
                        var bIsDark = oQRCode.isDark(row, col);
                        var nLeft = col * nWidth;
                        var nTop = row * nHeight;
                        _oContext.strokeStyle = bIsDark ? _htOption.colorDark : _htOption.colorLight;
                        _oContext.lineWidth = 1;
                        _oContext.fillStyle = bIsDark ? _htOption.colorDark : _htOption.colorLight;
                        _oContext.fillRect(nLeft, nTop, nWidth, nHeight);

                        // 안티 앨리어싱 방지 처리
                        _oContext.strokeRect(
                            Math.floor(nLeft) + 0.5,
                            Math.floor(nTop) + 0.5,
                            nRoundedWidth,
                            nRoundedHeight
                        );

                        _oContext.strokeRect(
                            Math.ceil(nLeft) - 0.5,
                            Math.ceil(nTop) - 0.5,
                            nRoundedWidth,
                            nRoundedHeight
                        );
                    }
                }

                this._bIsPainted = true;
            };

            /**
             * Make the image from Canvas if the browser supports Data URI.
             */
            Drawing.prototype.makeImage = function() {
                if(this._bIsPainted) {
                    _safeSetDataURI.call(this, _onMakeImage);
                }
            };

            /**
             * Return whether the QRCode is painted or not
             * 
             * @return {Boolean}
             */
            Drawing.prototype.isPainted = function() {
                return this._bIsPainted;
            };

            /**
             * Clear the QRCode
             */
            Drawing.prototype.clear = function() {
                this._oContext.clearRect(0, 0, this._elCanvas.width, this._elCanvas.height);
                this._bIsPainted = false;
            };

            /**
             * @private
             * @param {Number} nNumber
             */
            Drawing.prototype.round = function(nNumber) {
                if(!nNumber) {
                    return nNumber;
                }

                return Math.floor(nNumber * 1000) / 1000;
            };

            return Drawing;
        })();

        /**
         * Get the type by string length
         * 
         * @private
         * @param {String} sText
         * @param {Number} nCorrectLevel
         * @return {Number} type
         */
        function _getTypeNumber(sText, nCorrectLevel) {
            var nType = 1;
            var length = _getUTF8Length(sText);

            for(var i = 0, len = QRCodeLimitLength.length; i <= len; i++) {
                var nLimit = 0;

                switch(nCorrectLevel) {
                    case QRErrorCorrectLevel.L:
                        nLimit = QRCodeLimitLength[i][0];
                        break;
                    case QRErrorCorrectLevel.M:
                        nLimit = QRCodeLimitLength[i][1];
                        break;
                    case QRErrorCorrectLevel.Q:
                        nLimit = QRCodeLimitLength[i][2];
                        break;
                    case QRErrorCorrectLevel.H:
                        nLimit = QRCodeLimitLength[i][3];
                        break;
                }

                if(length <= nLimit) {
                    break;
                } else {
                    nType++;
                }
            }

            if(nType > QRCodeLimitLength.length) {
                throw new Error("Too long data");
            }

            return nType;
        }

        function _getUTF8Length(sText) {
            var replacedText = encodeURI(sText).toString().replace(/\%[0-9a-fA-F]{2}/g, 'a');
            return replacedText.length + (replacedText.length != sText ? 3 : 0);
        }

        /**
         * @class QRCode
         * @constructor
         * @example 
         * new QRCode(document.getElementById("test"), "http://jindo.dev.naver.com/collie");
         *
         * @example
         * var oQRCode = new QRCode("test", {
         *    text : "http://naver.com",
         *    width : 128,
         *    height : 128
         * });
         * 
         * oQRCode.clear(); // Clear the QRCode.
         * oQRCode.makeCode("http://map.naver.com"); // Re-create the QRCode.
         *
         * @param {HTMLElement|String} el target element or 'id' attribute of element.
         * @param {Object|String} vOption
         * @param {String} vOption.text QRCode link data
         * @param {Number} [vOption.width=256]
         * @param {Number} [vOption.height=256]
         * @param {String} [vOption.colorDark="#000000"]
         * @param {String} [vOption.colorLight="#ffffff"]
         * @param {QRCode.CorrectLevel} [vOption.correctLevel=QRCode.CorrectLevel.H] [L|M|Q|H] 
         */
        QRCode = function(el, vOption) {
            this._htOption = {
                width: 256,
                height: 256,
                typeNumber: 4,
                colorDark: "#000000",
                colorLight: "#ffffff",
                correctLevel: QRErrorCorrectLevel.H
            };

            if(typeof vOption === 'string') {
                vOption = {
                    text: vOption
                };
            }

            // Overwrites options
            if(vOption) {
                for(var i in vOption) {
                    this._htOption[i] = vOption[i];
                }
            }

            if(typeof el == "string") {
                el = document.getElementById(el);
            }

            if(this._htOption.useSVG) {
                Drawing = svgDrawer;
            }

            this._android = _getAndroid();
            this._el = el;
            this._oQRCode = null;
            this._oDrawing = new Drawing(this._el, this._htOption);

            if(this._htOption.text) {
                this.makeCode(this._htOption.text);
            }
        };

        /**
         * Make the QRCode
         * 
         * @param {String} sText link data
         */
        QRCode.prototype.makeCode = function(sText) {
            this._oQRCode = new QRCodeModel(_getTypeNumber(sText, this._htOption.correctLevel), this._htOption.correctLevel);
            this._oQRCode.addData(sText);
            this._oQRCode.make();
            this._el.title = sText;
            this._oDrawing.draw(this._oQRCode);
            this.makeImage();
        };

        /**
         * Make the Image from Canvas element
         * - It occurs automatically
         * - Android below 3 doesn't support Data-URI spec.
         * 
         * @private
         */
        QRCode.prototype.makeImage = function() {
            if(typeof this._oDrawing.makeImage == "function" && (!this._android || this._android >= 3)) {
                this._oDrawing.makeImage();
            }
        };

        /**
         * Clear the QRCode
         */
        QRCode.prototype.clear = function() {
            this._oDrawing.clear();
        };

        /**
         * @name QRCode.CorrectLevel
         */
        QRCode.CorrectLevel = QRErrorCorrectLevel;
    })();

    window.QRCode = QRCode;

    exports('qrcode');
});